1 /*
2 * Copyright 2008 - 2015 Freescale Semiconductor Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 * * Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution.
11 * * Neither the name of Freescale Semiconductor nor the
12 * names of its contributors may be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 *
16 * ALTERNATIVELY, this software may be distributed under the terms of the
17 * GNU General Public License ("GPL") as published by the Free Software
18 * Foundation, either version 2 of that License or (at your option) any
19 * later version.
20 *
21 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
22 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
28 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
34
35 #include <linux/io.h>
36 #include <linux/slab.h>
37 #include <linux/module.h>
38 #include <linux/interrupt.h>
39 #include <linux/of_platform.h>
40 #include <linux/of_address.h>
41 #include <linux/delay.h>
42 #include <linux/libfdt_env.h>
43
44 #include "fman.h"
45 #include "fman_port.h"
46 #include "fman_sp.h"
47 #include "fman_keygen.h"
48
49 /* Queue ID */
50 #define DFLT_FQ_ID 0x00FFFFFF
51
52 /* General defines */
53 #define PORT_BMI_FIFO_UNITS 0x100
54
55 #define MAX_PORT_FIFO_SIZE(bmi_max_fifo_size) \
56 min((u32)bmi_max_fifo_size, (u32)1024 * FMAN_BMI_FIFO_UNITS)
57
58 #define PORT_CG_MAP_NUM 8
59 #define PORT_PRS_RESULT_WORDS_NUM 8
60 #define PORT_IC_OFFSET_UNITS 0x10
61
62 #define MIN_EXT_BUF_SIZE 64
63
64 #define BMI_PORT_REGS_OFFSET 0
65 #define QMI_PORT_REGS_OFFSET 0x400
66 #define HWP_PORT_REGS_OFFSET 0x800
67
68 /* Default values */
69 #define DFLT_PORT_BUFFER_PREFIX_CONTEXT_DATA_ALIGN \
70 DFLT_FM_SP_BUFFER_PREFIX_CONTEXT_DATA_ALIGN
71
72 #define DFLT_PORT_CUT_BYTES_FROM_END 4
73
74 #define DFLT_PORT_ERRORS_TO_DISCARD FM_PORT_FRM_ERR_CLS_DISCARD
75 #define DFLT_PORT_MAX_FRAME_LENGTH 9600
76
77 #define DFLT_PORT_RX_FIFO_PRI_ELEVATION_LEV(bmi_max_fifo_size) \
78 MAX_PORT_FIFO_SIZE(bmi_max_fifo_size)
79
80 #define DFLT_PORT_RX_FIFO_THRESHOLD(major, bmi_max_fifo_size) \
81 (major == 6 ? \
82 MAX_PORT_FIFO_SIZE(bmi_max_fifo_size) : \
83 (MAX_PORT_FIFO_SIZE(bmi_max_fifo_size) * 3 / 4)) \
84
85 #define DFLT_PORT_EXTRA_NUM_OF_FIFO_BUFS 0
86
87 /* QMI defines */
88 #define QMI_DEQ_CFG_SUBPORTAL_MASK 0x1f
89
90 #define QMI_PORT_CFG_EN 0x80000000
91 #define QMI_PORT_STATUS_DEQ_FD_BSY 0x20000000
92
93 #define QMI_DEQ_CFG_PRI 0x80000000
94 #define QMI_DEQ_CFG_TYPE1 0x10000000
95 #define QMI_DEQ_CFG_TYPE2 0x20000000
96 #define QMI_DEQ_CFG_TYPE3 0x30000000
97 #define QMI_DEQ_CFG_PREFETCH_PARTIAL 0x01000000
98 #define QMI_DEQ_CFG_PREFETCH_FULL 0x03000000
99 #define QMI_DEQ_CFG_SP_MASK 0xf
100 #define QMI_DEQ_CFG_SP_SHIFT 20
101
102 #define QMI_BYTE_COUNT_LEVEL_CONTROL(_type) \
103 (_type == FMAN_PORT_TYPE_TX ? 0x1400 : 0x400)
104
105 /* BMI defins */
106 #define BMI_EBD_EN 0x80000000
107
108 #define BMI_PORT_CFG_EN 0x80000000
109
110 #define BMI_PORT_STATUS_BSY 0x80000000
111
112 #define BMI_DMA_ATTR_SWP_SHIFT FMAN_SP_DMA_ATTR_SWP_SHIFT
113 #define BMI_DMA_ATTR_WRITE_OPTIMIZE FMAN_SP_DMA_ATTR_WRITE_OPTIMIZE
114
115 #define BMI_RX_FIFO_PRI_ELEVATION_SHIFT 16
116 #define BMI_RX_FIFO_THRESHOLD_ETHE 0x80000000
117
118 #define BMI_FRAME_END_CS_IGNORE_SHIFT 24
119 #define BMI_FRAME_END_CS_IGNORE_MASK 0x0000001f
120
121 #define BMI_RX_FRAME_END_CUT_SHIFT 16
122 #define BMI_RX_FRAME_END_CUT_MASK 0x0000001f
123
124 #define BMI_IC_TO_EXT_SHIFT FMAN_SP_IC_TO_EXT_SHIFT
125 #define BMI_IC_TO_EXT_MASK 0x0000001f
126 #define BMI_IC_FROM_INT_SHIFT FMAN_SP_IC_FROM_INT_SHIFT
127 #define BMI_IC_FROM_INT_MASK 0x0000000f
128 #define BMI_IC_SIZE_MASK 0x0000001f
129
130 #define BMI_INT_BUF_MARG_SHIFT 28
131 #define BMI_INT_BUF_MARG_MASK 0x0000000f
132 #define BMI_EXT_BUF_MARG_START_SHIFT FMAN_SP_EXT_BUF_MARG_START_SHIFT
133 #define BMI_EXT_BUF_MARG_START_MASK 0x000001ff
134 #define BMI_EXT_BUF_MARG_END_MASK 0x000001ff
135
136 #define BMI_CMD_MR_LEAC 0x00200000
137 #define BMI_CMD_MR_SLEAC 0x00100000
138 #define BMI_CMD_MR_MA 0x00080000
139 #define BMI_CMD_MR_DEAS 0x00040000
140 #define BMI_CMD_RX_MR_DEF (BMI_CMD_MR_LEAC | \
141 BMI_CMD_MR_SLEAC | \
142 BMI_CMD_MR_MA | \
143 BMI_CMD_MR_DEAS)
144 #define BMI_CMD_TX_MR_DEF 0
145
146 #define BMI_CMD_ATTR_ORDER 0x80000000
147 #define BMI_CMD_ATTR_SYNC 0x02000000
148 #define BMI_CMD_ATTR_COLOR_SHIFT 26
149
150 #define BMI_FIFO_PIPELINE_DEPTH_SHIFT 12
151 #define BMI_FIFO_PIPELINE_DEPTH_MASK 0x0000000f
152 #define BMI_NEXT_ENG_FD_BITS_SHIFT 24
153
154 #define BMI_EXT_BUF_POOL_VALID FMAN_SP_EXT_BUF_POOL_VALID
155 #define BMI_EXT_BUF_POOL_EN_COUNTER FMAN_SP_EXT_BUF_POOL_EN_COUNTER
156 #define BMI_EXT_BUF_POOL_BACKUP FMAN_SP_EXT_BUF_POOL_BACKUP
157 #define BMI_EXT_BUF_POOL_ID_SHIFT 16
158 #define BMI_EXT_BUF_POOL_ID_MASK 0x003F0000
159 #define BMI_POOL_DEP_NUM_OF_POOLS_SHIFT 16
160
161 #define BMI_TX_FIFO_MIN_FILL_SHIFT 16
162
163 #define BMI_PRIORITY_ELEVATION_LEVEL ((0x3FF + 1) * PORT_BMI_FIFO_UNITS)
164 #define BMI_FIFO_THRESHOLD ((0x3FF + 1) * PORT_BMI_FIFO_UNITS)
165
166 #define BMI_DEQUEUE_PIPELINE_DEPTH(_type, _speed) \
167 ((_type == FMAN_PORT_TYPE_TX && _speed == 10000) ? 4 : 1)
168
169 #define RX_ERRS_TO_ENQ \
170 (FM_PORT_FRM_ERR_DMA | \
171 FM_PORT_FRM_ERR_PHYSICAL | \
172 FM_PORT_FRM_ERR_SIZE | \
173 FM_PORT_FRM_ERR_EXTRACTION | \
174 FM_PORT_FRM_ERR_NO_SCHEME | \
175 FM_PORT_FRM_ERR_PRS_TIMEOUT | \
176 FM_PORT_FRM_ERR_PRS_ILL_INSTRUCT | \
177 FM_PORT_FRM_ERR_BLOCK_LIMIT_EXCEEDED | \
178 FM_PORT_FRM_ERR_PRS_HDR_ERR | \
179 FM_PORT_FRM_ERR_KEYSIZE_OVERFLOW | \
180 FM_PORT_FRM_ERR_IPRE)
181
182 /* NIA defines */
183 #define NIA_ORDER_RESTOR 0x00800000
184 #define NIA_ENG_BMI 0x00500000
185 #define NIA_ENG_QMI_ENQ 0x00540000
186 #define NIA_ENG_QMI_DEQ 0x00580000
187 #define NIA_ENG_HWP 0x00440000
188 #define NIA_ENG_HWK 0x00480000
189 #define NIA_BMI_AC_ENQ_FRAME 0x00000002
190 #define NIA_BMI_AC_TX_RELEASE 0x000002C0
191 #define NIA_BMI_AC_RELEASE 0x000000C0
192 #define NIA_BMI_AC_TX 0x00000274
193 #define NIA_BMI_AC_FETCH_ALL_FRAME 0x0000020c
194
195 /* Port IDs */
196 #define TX_10G_PORT_BASE 0x30
197 #define RX_10G_PORT_BASE 0x10
198
199 /* BMI Rx port register map */
200 struct fman_port_rx_bmi_regs {
201 u32 fmbm_rcfg; /* Rx Configuration */
202 u32 fmbm_rst; /* Rx Status */
203 u32 fmbm_rda; /* Rx DMA attributes */
204 u32 fmbm_rfp; /* Rx FIFO Parameters */
205 u32 fmbm_rfed; /* Rx Frame End Data */
206 u32 fmbm_ricp; /* Rx Internal Context Parameters */
207 u32 fmbm_rim; /* Rx Internal Buffer Margins */
208 u32 fmbm_rebm; /* Rx External Buffer Margins */
209 u32 fmbm_rfne; /* Rx Frame Next Engine */
210 u32 fmbm_rfca; /* Rx Frame Command Attributes. */
211 u32 fmbm_rfpne; /* Rx Frame Parser Next Engine */
212 u32 fmbm_rpso; /* Rx Parse Start Offset */
213 u32 fmbm_rpp; /* Rx Policer Profile */
214 u32 fmbm_rccb; /* Rx Coarse Classification Base */
215 u32 fmbm_reth; /* Rx Excessive Threshold */
216 u32 reserved003c[1]; /* (0x03C 0x03F) */
217 u32 fmbm_rprai[PORT_PRS_RESULT_WORDS_NUM];
218 /* Rx Parse Results Array Init */
219 u32 fmbm_rfqid; /* Rx Frame Queue ID */
220 u32 fmbm_refqid; /* Rx Error Frame Queue ID */
221 u32 fmbm_rfsdm; /* Rx Frame Status Discard Mask */
222 u32 fmbm_rfsem; /* Rx Frame Status Error Mask */
223 u32 fmbm_rfene; /* Rx Frame Enqueue Next Engine */
224 u32 reserved0074[0x2]; /* (0x074-0x07C) */
225 u32 fmbm_rcmne; /* Rx Frame Continuous Mode Next Engine */
226 u32 reserved0080[0x20]; /* (0x080 0x0FF) */
227 u32 fmbm_ebmpi[FMAN_PORT_MAX_EXT_POOLS_NUM];
228 /* Buffer Manager pool Information- */
229 u32 fmbm_acnt[FMAN_PORT_MAX_EXT_POOLS_NUM]; /* Allocate Counter- */
230 u32 reserved0130[8]; /* 0x130/0x140 - 0x15F reserved - */
231 u32 fmbm_rcgm[PORT_CG_MAP_NUM]; /* Congestion Group Map */
232 u32 fmbm_mpd; /* BM Pool Depletion */
233 u32 reserved0184[0x1F]; /* (0x184 0x1FF) */
234 u32 fmbm_rstc; /* Rx Statistics Counters */
235 u32 fmbm_rfrc; /* Rx Frame Counter */
236 u32 fmbm_rfbc; /* Rx Bad Frames Counter */
237 u32 fmbm_rlfc; /* Rx Large Frames Counter */
238 u32 fmbm_rffc; /* Rx Filter Frames Counter */
239 u32 fmbm_rfdc; /* Rx Frame Discard Counter */
240 u32 fmbm_rfldec; /* Rx Frames List DMA Error Counter */
241 u32 fmbm_rodc; /* Rx Out of Buffers Discard nntr */
242 u32 fmbm_rbdc; /* Rx Buffers Deallocate Counter */
243 u32 fmbm_rpec; /* RX Prepare to enqueue Counte */
244 u32 reserved0224[0x16]; /* (0x224 0x27F) */
245 u32 fmbm_rpc; /* Rx Performance Counters */
246 u32 fmbm_rpcp; /* Rx Performance Count Parameters */
247 u32 fmbm_rccn; /* Rx Cycle Counter */
248 u32 fmbm_rtuc; /* Rx Tasks Utilization Counter */
249 u32 fmbm_rrquc; /* Rx Receive Queue Utilization cntr */
250 u32 fmbm_rduc; /* Rx DMA Utilization Counter */
251 u32 fmbm_rfuc; /* Rx FIFO Utilization Counter */
252 u32 fmbm_rpac; /* Rx Pause Activation Counter */
253 u32 reserved02a0[0x18]; /* (0x2A0 0x2FF) */
254 u32 fmbm_rdcfg[0x3]; /* Rx Debug Configuration */
255 u32 fmbm_rgpr; /* Rx General Purpose Register */
256 u32 reserved0310[0x3a];
257 };
258
259 /* BMI Tx port register map */
260 struct fman_port_tx_bmi_regs {
261 u32 fmbm_tcfg; /* Tx Configuration */
262 u32 fmbm_tst; /* Tx Status */
263 u32 fmbm_tda; /* Tx DMA attributes */
264 u32 fmbm_tfp; /* Tx FIFO Parameters */
265 u32 fmbm_tfed; /* Tx Frame End Data */
266 u32 fmbm_ticp; /* Tx Internal Context Parameters */
267 u32 fmbm_tfdne; /* Tx Frame Dequeue Next Engine. */
268 u32 fmbm_tfca; /* Tx Frame Command attribute. */
269 u32 fmbm_tcfqid; /* Tx Confirmation Frame Queue ID. */
270 u32 fmbm_tefqid; /* Tx Frame Error Queue ID */
271 u32 fmbm_tfene; /* Tx Frame Enqueue Next Engine */
272 u32 fmbm_trlmts; /* Tx Rate Limiter Scale */
273 u32 fmbm_trlmt; /* Tx Rate Limiter */
274 u32 reserved0034[0x0e]; /* (0x034-0x6c) */
275 u32 fmbm_tccb; /* Tx Coarse Classification base */
276 u32 fmbm_tfne; /* Tx Frame Next Engine */
277 u32 fmbm_tpfcm[0x02];
278 /* Tx Priority based Flow Control (PFC) Mapping */
279 u32 fmbm_tcmne; /* Tx Frame Continuous Mode Next Engine */
280 u32 reserved0080[0x60]; /* (0x080-0x200) */
281 u32 fmbm_tstc; /* Tx Statistics Counters */
282 u32 fmbm_tfrc; /* Tx Frame Counter */
283 u32 fmbm_tfdc; /* Tx Frames Discard Counter */
284 u32 fmbm_tfledc; /* Tx Frame len error discard cntr */
285 u32 fmbm_tfufdc; /* Tx Frame unsprt frmt discard cntr */
286 u32 fmbm_tbdc; /* Tx Buffers Deallocate Counter */
287 u32 reserved0218[0x1A]; /* (0x218-0x280) */
288 u32 fmbm_tpc; /* Tx Performance Counters */
289 u32 fmbm_tpcp; /* Tx Performance Count Parameters */
290 u32 fmbm_tccn; /* Tx Cycle Counter */
291 u32 fmbm_ttuc; /* Tx Tasks Utilization Counter */
292 u32 fmbm_ttcquc; /* Tx Transmit conf Q util Counter */
293 u32 fmbm_tduc; /* Tx DMA Utilization Counter */
294 u32 fmbm_tfuc; /* Tx FIFO Utilization Counter */
295 u32 reserved029c[16]; /* (0x29C-0x2FF) */
296 u32 fmbm_tdcfg[0x3]; /* Tx Debug Configuration */
297 u32 fmbm_tgpr; /* Tx General Purpose Register */
298 u32 reserved0310[0x3a]; /* (0x310-0x3FF) */
299 };
300
301 /* BMI port register map */
302 union fman_port_bmi_regs {
303 struct fman_port_rx_bmi_regs rx;
304 struct fman_port_tx_bmi_regs tx;
305 };
306
307 /* QMI port register map */
308 struct fman_port_qmi_regs {
309 u32 fmqm_pnc; /* PortID n Configuration Register */
310 u32 fmqm_pns; /* PortID n Status Register */
311 u32 fmqm_pnts; /* PortID n Task Status Register */
312 u32 reserved00c[4]; /* 0xn00C - 0xn01B */
313 u32 fmqm_pnen; /* PortID n Enqueue NIA Register */
314 u32 fmqm_pnetfc; /* PortID n Enq Total Frame Counter */
315 u32 reserved024[2]; /* 0xn024 - 0x02B */
316 u32 fmqm_pndn; /* PortID n Dequeue NIA Register */
317 u32 fmqm_pndc; /* PortID n Dequeue Config Register */
318 u32 fmqm_pndtfc; /* PortID n Dequeue tot Frame cntr */
319 u32 fmqm_pndfdc; /* PortID n Dequeue FQID Dflt Cntr */
320 u32 fmqm_pndcc; /* PortID n Dequeue Confirm Counter */
321 };
322
323 #define HWP_HXS_COUNT 16
324 #define HWP_HXS_PHE_REPORT 0x00000800
325 #define HWP_HXS_PCAC_PSTAT 0x00000100
326 #define HWP_HXS_PCAC_PSTOP 0x00000001
327 #define HWP_HXS_TCP_OFFSET 0xA
328 #define HWP_HXS_UDP_OFFSET 0xB
329 #define HWP_HXS_SH_PAD_REM 0x80000000
330
331 struct fman_port_hwp_regs {
332 struct {
333 u32 ssa; /* Soft Sequence Attachment */
334 u32 lcv; /* Line-up Enable Confirmation Mask */
335 } pmda[HWP_HXS_COUNT]; /* Parse Memory Direct Access Registers */
336 u32 reserved080[(0x3f8 - 0x080) / 4]; /* (0x080-0x3f7) */
337 u32 fmpr_pcac; /* Configuration Access Control */
338 };
339
340 /* QMI dequeue prefetch modes */
341 enum fman_port_deq_prefetch {
342 FMAN_PORT_DEQ_NO_PREFETCH, /* No prefetch mode */
343 FMAN_PORT_DEQ_PART_PREFETCH, /* Partial prefetch mode */
344 FMAN_PORT_DEQ_FULL_PREFETCH /* Full prefetch mode */
345 };
346
347 /* A structure for defining FM port resources */
348 struct fman_port_rsrc {
349 u32 num; /* Committed required resource */
350 u32 extra; /* Extra (not committed) required resource */
351 };
352
353 enum fman_port_dma_swap {
354 FMAN_PORT_DMA_NO_SWAP, /* No swap, transfer data as is */
355 FMAN_PORT_DMA_SWAP_LE,
356 /* The transferred data should be swapped in PPC Little Endian mode */
357 FMAN_PORT_DMA_SWAP_BE
358 /* The transferred data should be swapped in Big Endian mode */
359 };
360
361 /* Default port color */
362 enum fman_port_color {
363 FMAN_PORT_COLOR_GREEN, /* Default port color is green */
364 FMAN_PORT_COLOR_YELLOW, /* Default port color is yellow */
365 FMAN_PORT_COLOR_RED, /* Default port color is red */
366 FMAN_PORT_COLOR_OVERRIDE /* Ignore color */
367 };
368
369 /* QMI dequeue from the SP channel - types */
370 enum fman_port_deq_type {
371 FMAN_PORT_DEQ_BY_PRI,
372 /* Priority precedence and Intra-Class scheduling */
373 FMAN_PORT_DEQ_ACTIVE_FQ,
374 /* Active FQ precedence and Intra-Class scheduling */
375 FMAN_PORT_DEQ_ACTIVE_FQ_NO_ICS
376 /* Active FQ precedence and override Intra-Class scheduling */
377 };
378
379 /* External buffer pools configuration */
380 struct fman_port_bpools {
381 u8 count; /* Num of pools to set up */
382 bool counters_enable; /* Enable allocate counters */
383 u8 grp_bp_depleted_num;
384 /* Number of depleted pools - if reached the BMI indicates
385 * the MAC to send a pause frame
386 */
387 struct {
388 u8 bpid; /* BM pool ID */
389 u16 size;
390 /* Pool's size - must be in ascending order */
391 bool is_backup;
392 /* If this is a backup pool */
393 bool grp_bp_depleted;
394 /* Consider this buffer in multiple pools depletion criteria */
395 bool single_bp_depleted;
396 /* Consider this buffer in single pool depletion criteria */
397 } bpool[FMAN_PORT_MAX_EXT_POOLS_NUM];
398 };
399
400 struct fman_port_cfg {
401 u32 dflt_fqid;
402 u32 err_fqid;
403 u32 pcd_base_fqid;
404 u32 pcd_fqs_count;
405 u8 deq_sp;
406 bool deq_high_priority;
407 enum fman_port_deq_type deq_type;
408 enum fman_port_deq_prefetch deq_prefetch_option;
409 u16 deq_byte_cnt;
410 u8 cheksum_last_bytes_ignore;
411 u8 rx_cut_end_bytes;
412 struct fman_buf_pool_depletion buf_pool_depletion;
413 struct fman_ext_pools ext_buf_pools;
414 u32 tx_fifo_min_level;
415 u32 tx_fifo_low_comf_level;
416 u32 rx_pri_elevation;
417 u32 rx_fifo_thr;
418 struct fman_sp_buf_margins buf_margins;
419 u32 int_buf_start_margin;
420 struct fman_sp_int_context_data_copy int_context;
421 u32 discard_mask;
422 u32 err_mask;
423 struct fman_buffer_prefix_content buffer_prefix_content;
424 bool dont_release_buf;
425
426 u8 rx_fd_bits;
427 u32 tx_fifo_deq_pipeline_depth;
428 bool errata_A006320;
429 bool excessive_threshold_register;
430 bool fmbm_tfne_has_features;
431
432 enum fman_port_dma_swap dma_swap_data;
433 enum fman_port_color color;
434 };
435
436 struct fman_port_rx_pools_params {
437 u8 num_of_pools;
438 u16 largest_buf_size;
439 };
440
441 struct fman_port_dts_params {
442 void __iomem *base_addr; /* FMan port virtual memory */
443 enum fman_port_type type; /* Port type */
444 u16 speed; /* Port speed */
445 u8 id; /* HW Port Id */
446 u32 qman_channel_id; /* QMan channel id (non RX only) */
447 struct fman *fman; /* FMan Handle */
448 };
449
450 struct fman_port {
451 void *fm;
452 struct device *dev;
453 struct fman_rev_info rev_info;
454 u8 port_id;
455 enum fman_port_type port_type;
456 u16 port_speed;
457
458 union fman_port_bmi_regs __iomem *bmi_regs;
459 struct fman_port_qmi_regs __iomem *qmi_regs;
460 struct fman_port_hwp_regs __iomem *hwp_regs;
461
462 struct fman_sp_buffer_offsets buffer_offsets;
463
464 u8 internal_buf_offset;
465 struct fman_ext_pools ext_buf_pools;
466
467 u16 max_frame_length;
468 struct fman_port_rsrc open_dmas;
469 struct fman_port_rsrc tasks;
470 struct fman_port_rsrc fifo_bufs;
471 struct fman_port_rx_pools_params rx_pools_params;
472
473 struct fman_port_cfg *cfg;
474 struct fman_port_dts_params dts_params;
475
476 u8 ext_pools_num;
477 u32 max_port_fifo_size;
478 u32 max_num_of_ext_pools;
479 u32 max_num_of_sub_portals;
480 u32 bm_max_num_of_pools;
481 };
482
init_bmi_rx(struct fman_port * port)483 static int init_bmi_rx(struct fman_port *port)
484 {
485 struct fman_port_rx_bmi_regs __iomem *regs = &port->bmi_regs->rx;
486 struct fman_port_cfg *cfg = port->cfg;
487 u32 tmp;
488
489 /* DMA attributes */
490 tmp = (u32)cfg->dma_swap_data << BMI_DMA_ATTR_SWP_SHIFT;
491 /* Enable write optimization */
492 tmp |= BMI_DMA_ATTR_WRITE_OPTIMIZE;
493 iowrite32be(tmp, ®s->fmbm_rda);
494
495 /* Rx FIFO parameters */
496 tmp = (cfg->rx_pri_elevation / PORT_BMI_FIFO_UNITS - 1) <<
497 BMI_RX_FIFO_PRI_ELEVATION_SHIFT;
498 tmp |= cfg->rx_fifo_thr / PORT_BMI_FIFO_UNITS - 1;
499 iowrite32be(tmp, ®s->fmbm_rfp);
500
501 if (cfg->excessive_threshold_register)
502 /* always allow access to the extra resources */
503 iowrite32be(BMI_RX_FIFO_THRESHOLD_ETHE, ®s->fmbm_reth);
504
505 /* Frame end data */
506 tmp = (cfg->cheksum_last_bytes_ignore & BMI_FRAME_END_CS_IGNORE_MASK) <<
507 BMI_FRAME_END_CS_IGNORE_SHIFT;
508 tmp |= (cfg->rx_cut_end_bytes & BMI_RX_FRAME_END_CUT_MASK) <<
509 BMI_RX_FRAME_END_CUT_SHIFT;
510 if (cfg->errata_A006320)
511 tmp &= 0xffe0ffff;
512 iowrite32be(tmp, ®s->fmbm_rfed);
513
514 /* Internal context parameters */
515 tmp = ((cfg->int_context.ext_buf_offset / PORT_IC_OFFSET_UNITS) &
516 BMI_IC_TO_EXT_MASK) << BMI_IC_TO_EXT_SHIFT;
517 tmp |= ((cfg->int_context.int_context_offset / PORT_IC_OFFSET_UNITS) &
518 BMI_IC_FROM_INT_MASK) << BMI_IC_FROM_INT_SHIFT;
519 tmp |= (cfg->int_context.size / PORT_IC_OFFSET_UNITS) &
520 BMI_IC_SIZE_MASK;
521 iowrite32be(tmp, ®s->fmbm_ricp);
522
523 /* Internal buffer offset */
524 tmp = ((cfg->int_buf_start_margin / PORT_IC_OFFSET_UNITS) &
525 BMI_INT_BUF_MARG_MASK) << BMI_INT_BUF_MARG_SHIFT;
526 iowrite32be(tmp, ®s->fmbm_rim);
527
528 /* External buffer margins */
529 tmp = (cfg->buf_margins.start_margins & BMI_EXT_BUF_MARG_START_MASK) <<
530 BMI_EXT_BUF_MARG_START_SHIFT;
531 tmp |= cfg->buf_margins.end_margins & BMI_EXT_BUF_MARG_END_MASK;
532 iowrite32be(tmp, ®s->fmbm_rebm);
533
534 /* Frame attributes */
535 tmp = BMI_CMD_RX_MR_DEF;
536 tmp |= BMI_CMD_ATTR_ORDER;
537 tmp |= (u32)cfg->color << BMI_CMD_ATTR_COLOR_SHIFT;
538 /* Synchronization request */
539 tmp |= BMI_CMD_ATTR_SYNC;
540
541 iowrite32be(tmp, ®s->fmbm_rfca);
542
543 /* NIA */
544 tmp = (u32)cfg->rx_fd_bits << BMI_NEXT_ENG_FD_BITS_SHIFT;
545
546 tmp |= NIA_ENG_HWP;
547 iowrite32be(tmp, ®s->fmbm_rfne);
548
549 /* Parser Next Engine NIA */
550 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_ENQ_FRAME, ®s->fmbm_rfpne);
551
552 /* Enqueue NIA */
553 iowrite32be(NIA_ENG_QMI_ENQ | NIA_ORDER_RESTOR, ®s->fmbm_rfene);
554
555 /* Default/error queues */
556 iowrite32be((cfg->dflt_fqid & DFLT_FQ_ID), ®s->fmbm_rfqid);
557 iowrite32be((cfg->err_fqid & DFLT_FQ_ID), ®s->fmbm_refqid);
558
559 /* Discard/error masks */
560 iowrite32be(cfg->discard_mask, ®s->fmbm_rfsdm);
561 iowrite32be(cfg->err_mask, ®s->fmbm_rfsem);
562
563 return 0;
564 }
565
init_bmi_tx(struct fman_port * port)566 static int init_bmi_tx(struct fman_port *port)
567 {
568 struct fman_port_tx_bmi_regs __iomem *regs = &port->bmi_regs->tx;
569 struct fman_port_cfg *cfg = port->cfg;
570 u32 tmp;
571
572 /* Tx Configuration register */
573 tmp = 0;
574 iowrite32be(tmp, ®s->fmbm_tcfg);
575
576 /* DMA attributes */
577 tmp = (u32)cfg->dma_swap_data << BMI_DMA_ATTR_SWP_SHIFT;
578 iowrite32be(tmp, ®s->fmbm_tda);
579
580 /* Tx FIFO parameters */
581 tmp = (cfg->tx_fifo_min_level / PORT_BMI_FIFO_UNITS) <<
582 BMI_TX_FIFO_MIN_FILL_SHIFT;
583 tmp |= ((cfg->tx_fifo_deq_pipeline_depth - 1) &
584 BMI_FIFO_PIPELINE_DEPTH_MASK) << BMI_FIFO_PIPELINE_DEPTH_SHIFT;
585 tmp |= (cfg->tx_fifo_low_comf_level / PORT_BMI_FIFO_UNITS) - 1;
586 iowrite32be(tmp, ®s->fmbm_tfp);
587
588 /* Frame end data */
589 tmp = (cfg->cheksum_last_bytes_ignore & BMI_FRAME_END_CS_IGNORE_MASK) <<
590 BMI_FRAME_END_CS_IGNORE_SHIFT;
591 iowrite32be(tmp, ®s->fmbm_tfed);
592
593 /* Internal context parameters */
594 tmp = ((cfg->int_context.ext_buf_offset / PORT_IC_OFFSET_UNITS) &
595 BMI_IC_TO_EXT_MASK) << BMI_IC_TO_EXT_SHIFT;
596 tmp |= ((cfg->int_context.int_context_offset / PORT_IC_OFFSET_UNITS) &
597 BMI_IC_FROM_INT_MASK) << BMI_IC_FROM_INT_SHIFT;
598 tmp |= (cfg->int_context.size / PORT_IC_OFFSET_UNITS) &
599 BMI_IC_SIZE_MASK;
600 iowrite32be(tmp, ®s->fmbm_ticp);
601
602 /* Frame attributes */
603 tmp = BMI_CMD_TX_MR_DEF;
604 tmp |= BMI_CMD_ATTR_ORDER;
605 tmp |= (u32)cfg->color << BMI_CMD_ATTR_COLOR_SHIFT;
606 iowrite32be(tmp, ®s->fmbm_tfca);
607
608 /* Dequeue NIA + enqueue NIA */
609 iowrite32be(NIA_ENG_QMI_DEQ, ®s->fmbm_tfdne);
610 iowrite32be(NIA_ENG_QMI_ENQ | NIA_ORDER_RESTOR, ®s->fmbm_tfene);
611 if (cfg->fmbm_tfne_has_features)
612 iowrite32be(!cfg->dflt_fqid ?
613 BMI_EBD_EN | NIA_BMI_AC_FETCH_ALL_FRAME :
614 NIA_BMI_AC_FETCH_ALL_FRAME, ®s->fmbm_tfne);
615 if (!cfg->dflt_fqid && cfg->dont_release_buf) {
616 iowrite32be(DFLT_FQ_ID, ®s->fmbm_tcfqid);
617 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX_RELEASE,
618 ®s->fmbm_tfene);
619 if (cfg->fmbm_tfne_has_features)
620 iowrite32be(ioread32be(®s->fmbm_tfne) & ~BMI_EBD_EN,
621 ®s->fmbm_tfne);
622 }
623
624 /* Confirmation/error queues */
625 if (cfg->dflt_fqid || !cfg->dont_release_buf)
626 iowrite32be(cfg->dflt_fqid & DFLT_FQ_ID, ®s->fmbm_tcfqid);
627 iowrite32be((cfg->err_fqid & DFLT_FQ_ID), ®s->fmbm_tefqid);
628
629 return 0;
630 }
631
init_qmi(struct fman_port * port)632 static int init_qmi(struct fman_port *port)
633 {
634 struct fman_port_qmi_regs __iomem *regs = port->qmi_regs;
635 struct fman_port_cfg *cfg = port->cfg;
636 u32 tmp;
637
638 /* Rx port configuration */
639 if (port->port_type == FMAN_PORT_TYPE_RX) {
640 /* Enqueue NIA */
641 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_RELEASE, ®s->fmqm_pnen);
642 return 0;
643 }
644
645 /* Continue with Tx port configuration */
646 if (port->port_type == FMAN_PORT_TYPE_TX) {
647 /* Enqueue NIA */
648 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX_RELEASE,
649 ®s->fmqm_pnen);
650 /* Dequeue NIA */
651 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX, ®s->fmqm_pndn);
652 }
653
654 /* Dequeue Configuration register */
655 tmp = 0;
656 if (cfg->deq_high_priority)
657 tmp |= QMI_DEQ_CFG_PRI;
658
659 switch (cfg->deq_type) {
660 case FMAN_PORT_DEQ_BY_PRI:
661 tmp |= QMI_DEQ_CFG_TYPE1;
662 break;
663 case FMAN_PORT_DEQ_ACTIVE_FQ:
664 tmp |= QMI_DEQ_CFG_TYPE2;
665 break;
666 case FMAN_PORT_DEQ_ACTIVE_FQ_NO_ICS:
667 tmp |= QMI_DEQ_CFG_TYPE3;
668 break;
669 default:
670 return -EINVAL;
671 }
672
673 switch (cfg->deq_prefetch_option) {
674 case FMAN_PORT_DEQ_NO_PREFETCH:
675 break;
676 case FMAN_PORT_DEQ_PART_PREFETCH:
677 tmp |= QMI_DEQ_CFG_PREFETCH_PARTIAL;
678 break;
679 case FMAN_PORT_DEQ_FULL_PREFETCH:
680 tmp |= QMI_DEQ_CFG_PREFETCH_FULL;
681 break;
682 default:
683 return -EINVAL;
684 }
685
686 tmp |= (cfg->deq_sp & QMI_DEQ_CFG_SP_MASK) << QMI_DEQ_CFG_SP_SHIFT;
687 tmp |= cfg->deq_byte_cnt;
688 iowrite32be(tmp, ®s->fmqm_pndc);
689
690 return 0;
691 }
692
stop_port_hwp(struct fman_port * port)693 static void stop_port_hwp(struct fman_port *port)
694 {
695 struct fman_port_hwp_regs __iomem *regs = port->hwp_regs;
696 int cnt = 100;
697
698 iowrite32be(HWP_HXS_PCAC_PSTOP, ®s->fmpr_pcac);
699
700 while (cnt-- > 0 &&
701 (ioread32be(®s->fmpr_pcac) & HWP_HXS_PCAC_PSTAT))
702 udelay(10);
703 if (!cnt)
704 pr_err("Timeout stopping HW Parser\n");
705 }
706
start_port_hwp(struct fman_port * port)707 static void start_port_hwp(struct fman_port *port)
708 {
709 struct fman_port_hwp_regs __iomem *regs = port->hwp_regs;
710 int cnt = 100;
711
712 iowrite32be(0, ®s->fmpr_pcac);
713
714 while (cnt-- > 0 &&
715 !(ioread32be(®s->fmpr_pcac) & HWP_HXS_PCAC_PSTAT))
716 udelay(10);
717 if (!cnt)
718 pr_err("Timeout starting HW Parser\n");
719 }
720
init_hwp(struct fman_port * port)721 static void init_hwp(struct fman_port *port)
722 {
723 struct fman_port_hwp_regs __iomem *regs = port->hwp_regs;
724 int i;
725
726 stop_port_hwp(port);
727
728 for (i = 0; i < HWP_HXS_COUNT; i++) {
729 /* enable HXS error reporting into FD[STATUS] PHE */
730 iowrite32be(0x00000000, ®s->pmda[i].ssa);
731 iowrite32be(0xffffffff, ®s->pmda[i].lcv);
732 }
733
734 /* Short packet padding removal from checksum calculation */
735 iowrite32be(HWP_HXS_SH_PAD_REM, ®s->pmda[HWP_HXS_TCP_OFFSET].ssa);
736 iowrite32be(HWP_HXS_SH_PAD_REM, ®s->pmda[HWP_HXS_UDP_OFFSET].ssa);
737
738 start_port_hwp(port);
739 }
740
init(struct fman_port * port)741 static int init(struct fman_port *port)
742 {
743 int err;
744
745 /* Init BMI registers */
746 switch (port->port_type) {
747 case FMAN_PORT_TYPE_RX:
748 err = init_bmi_rx(port);
749 if (!err)
750 init_hwp(port);
751 break;
752 case FMAN_PORT_TYPE_TX:
753 err = init_bmi_tx(port);
754 break;
755 default:
756 return -EINVAL;
757 }
758
759 if (err)
760 return err;
761
762 /* Init QMI registers */
763 err = init_qmi(port);
764 if (err)
765 return err;
766
767 return 0;
768 }
769
set_bpools(const struct fman_port * port,const struct fman_port_bpools * bp)770 static int set_bpools(const struct fman_port *port,
771 const struct fman_port_bpools *bp)
772 {
773 u32 __iomem *bp_reg, *bp_depl_reg;
774 u32 tmp;
775 u8 i, max_bp_num;
776 bool grp_depl_used = false, rx_port;
777
778 switch (port->port_type) {
779 case FMAN_PORT_TYPE_RX:
780 max_bp_num = port->ext_pools_num;
781 rx_port = true;
782 bp_reg = port->bmi_regs->rx.fmbm_ebmpi;
783 bp_depl_reg = &port->bmi_regs->rx.fmbm_mpd;
784 break;
785 default:
786 return -EINVAL;
787 }
788
789 if (rx_port) {
790 /* Check buffers are provided in ascending order */
791 for (i = 0; (i < (bp->count - 1) &&
792 (i < FMAN_PORT_MAX_EXT_POOLS_NUM - 1)); i++) {
793 if (bp->bpool[i].size > bp->bpool[i + 1].size)
794 return -EINVAL;
795 }
796 }
797
798 /* Set up external buffers pools */
799 for (i = 0; i < bp->count; i++) {
800 tmp = BMI_EXT_BUF_POOL_VALID;
801 tmp |= ((u32)bp->bpool[i].bpid <<
802 BMI_EXT_BUF_POOL_ID_SHIFT) & BMI_EXT_BUF_POOL_ID_MASK;
803
804 if (rx_port) {
805 if (bp->counters_enable)
806 tmp |= BMI_EXT_BUF_POOL_EN_COUNTER;
807
808 if (bp->bpool[i].is_backup)
809 tmp |= BMI_EXT_BUF_POOL_BACKUP;
810
811 tmp |= (u32)bp->bpool[i].size;
812 }
813
814 iowrite32be(tmp, &bp_reg[i]);
815 }
816
817 /* Clear unused pools */
818 for (i = bp->count; i < max_bp_num; i++)
819 iowrite32be(0, &bp_reg[i]);
820
821 /* Pools depletion */
822 tmp = 0;
823 for (i = 0; i < FMAN_PORT_MAX_EXT_POOLS_NUM; i++) {
824 if (bp->bpool[i].grp_bp_depleted) {
825 grp_depl_used = true;
826 tmp |= 0x80000000 >> i;
827 }
828
829 if (bp->bpool[i].single_bp_depleted)
830 tmp |= 0x80 >> i;
831 }
832
833 if (grp_depl_used)
834 tmp |= ((u32)bp->grp_bp_depleted_num - 1) <<
835 BMI_POOL_DEP_NUM_OF_POOLS_SHIFT;
836
837 iowrite32be(tmp, bp_depl_reg);
838 return 0;
839 }
840
is_init_done(struct fman_port_cfg * cfg)841 static bool is_init_done(struct fman_port_cfg *cfg)
842 {
843 /* Checks if FMan port driver parameters were initialized */
844 if (!cfg)
845 return true;
846
847 return false;
848 }
849
verify_size_of_fifo(struct fman_port * port)850 static int verify_size_of_fifo(struct fman_port *port)
851 {
852 u32 min_fifo_size_required = 0, opt_fifo_size_for_b2b = 0;
853
854 /* TX Ports */
855 if (port->port_type == FMAN_PORT_TYPE_TX) {
856 min_fifo_size_required = (u32)
857 (roundup(port->max_frame_length,
858 FMAN_BMI_FIFO_UNITS) + (3 * FMAN_BMI_FIFO_UNITS));
859
860 min_fifo_size_required +=
861 port->cfg->tx_fifo_deq_pipeline_depth *
862 FMAN_BMI_FIFO_UNITS;
863
864 opt_fifo_size_for_b2b = min_fifo_size_required;
865
866 /* Add some margin for back-to-back capability to improve
867 * performance, allows the hardware to pipeline new frame dma
868 * while the previous frame not yet transmitted.
869 */
870 if (port->port_speed == 10000)
871 opt_fifo_size_for_b2b += 3 * FMAN_BMI_FIFO_UNITS;
872 else
873 opt_fifo_size_for_b2b += 2 * FMAN_BMI_FIFO_UNITS;
874 }
875
876 /* RX Ports */
877 else if (port->port_type == FMAN_PORT_TYPE_RX) {
878 if (port->rev_info.major >= 6)
879 min_fifo_size_required = (u32)
880 (roundup(port->max_frame_length,
881 FMAN_BMI_FIFO_UNITS) +
882 (5 * FMAN_BMI_FIFO_UNITS));
883 /* 4 according to spec + 1 for FOF>0 */
884 else
885 min_fifo_size_required = (u32)
886 (roundup(min(port->max_frame_length,
887 port->rx_pools_params.largest_buf_size),
888 FMAN_BMI_FIFO_UNITS) +
889 (7 * FMAN_BMI_FIFO_UNITS));
890
891 opt_fifo_size_for_b2b = min_fifo_size_required;
892
893 /* Add some margin for back-to-back capability to improve
894 * performance,allows the hardware to pipeline new frame dma
895 * while the previous frame not yet transmitted.
896 */
897 if (port->port_speed == 10000)
898 opt_fifo_size_for_b2b += 8 * FMAN_BMI_FIFO_UNITS;
899 else
900 opt_fifo_size_for_b2b += 3 * FMAN_BMI_FIFO_UNITS;
901 }
902
903 WARN_ON(min_fifo_size_required <= 0);
904 WARN_ON(opt_fifo_size_for_b2b < min_fifo_size_required);
905
906 /* Verify the size */
907 if (port->fifo_bufs.num < min_fifo_size_required)
908 dev_dbg(port->dev, "%s: FIFO size should be enlarged to %d bytes\n",
909 __func__, min_fifo_size_required);
910 else if (port->fifo_bufs.num < opt_fifo_size_for_b2b)
911 dev_dbg(port->dev, "%s: For b2b processing,FIFO may be enlarged to %d bytes\n",
912 __func__, opt_fifo_size_for_b2b);
913
914 return 0;
915 }
916
set_ext_buffer_pools(struct fman_port * port)917 static int set_ext_buffer_pools(struct fman_port *port)
918 {
919 struct fman_ext_pools *ext_buf_pools = &port->cfg->ext_buf_pools;
920 struct fman_buf_pool_depletion *buf_pool_depletion =
921 &port->cfg->buf_pool_depletion;
922 u8 ordered_array[FMAN_PORT_MAX_EXT_POOLS_NUM];
923 u16 sizes_array[BM_MAX_NUM_OF_POOLS];
924 int i = 0, j = 0, err;
925 struct fman_port_bpools bpools;
926
927 memset(&ordered_array, 0, sizeof(u8) * FMAN_PORT_MAX_EXT_POOLS_NUM);
928 memset(&sizes_array, 0, sizeof(u16) * BM_MAX_NUM_OF_POOLS);
929 memcpy(&port->ext_buf_pools, ext_buf_pools,
930 sizeof(struct fman_ext_pools));
931
932 fman_sp_set_buf_pools_in_asc_order_of_buf_sizes(ext_buf_pools,
933 ordered_array,
934 sizes_array);
935
936 memset(&bpools, 0, sizeof(struct fman_port_bpools));
937 bpools.count = ext_buf_pools->num_of_pools_used;
938 bpools.counters_enable = true;
939 for (i = 0; i < ext_buf_pools->num_of_pools_used; i++) {
940 bpools.bpool[i].bpid = ordered_array[i];
941 bpools.bpool[i].size = sizes_array[ordered_array[i]];
942 }
943
944 /* save pools parameters for later use */
945 port->rx_pools_params.num_of_pools = ext_buf_pools->num_of_pools_used;
946 port->rx_pools_params.largest_buf_size =
947 sizes_array[ordered_array[ext_buf_pools->num_of_pools_used - 1]];
948
949 /* FMBM_RMPD reg. - pool depletion */
950 if (buf_pool_depletion->pools_grp_mode_enable) {
951 bpools.grp_bp_depleted_num = buf_pool_depletion->num_of_pools;
952 for (i = 0; i < port->bm_max_num_of_pools; i++) {
953 if (buf_pool_depletion->pools_to_consider[i]) {
954 for (j = 0; j < ext_buf_pools->
955 num_of_pools_used; j++) {
956 if (i == ordered_array[j]) {
957 bpools.bpool[j].
958 grp_bp_depleted = true;
959 break;
960 }
961 }
962 }
963 }
964 }
965
966 if (buf_pool_depletion->single_pool_mode_enable) {
967 for (i = 0; i < port->bm_max_num_of_pools; i++) {
968 if (buf_pool_depletion->
969 pools_to_consider_for_single_mode[i]) {
970 for (j = 0; j < ext_buf_pools->
971 num_of_pools_used; j++) {
972 if (i == ordered_array[j]) {
973 bpools.bpool[j].
974 single_bp_depleted = true;
975 break;
976 }
977 }
978 }
979 }
980 }
981
982 err = set_bpools(port, &bpools);
983 if (err != 0) {
984 dev_err(port->dev, "%s: set_bpools() failed\n", __func__);
985 return -EINVAL;
986 }
987
988 return 0;
989 }
990
init_low_level_driver(struct fman_port * port)991 static int init_low_level_driver(struct fman_port *port)
992 {
993 struct fman_port_cfg *cfg = port->cfg;
994 u32 tmp_val;
995
996 switch (port->port_type) {
997 case FMAN_PORT_TYPE_RX:
998 cfg->err_mask = (RX_ERRS_TO_ENQ & ~cfg->discard_mask);
999 break;
1000 default:
1001 break;
1002 }
1003
1004 tmp_val = (u32)((port->internal_buf_offset % OFFSET_UNITS) ?
1005 (port->internal_buf_offset / OFFSET_UNITS + 1) :
1006 (port->internal_buf_offset / OFFSET_UNITS));
1007 port->internal_buf_offset = (u8)(tmp_val * OFFSET_UNITS);
1008 port->cfg->int_buf_start_margin = port->internal_buf_offset;
1009
1010 if (init(port) != 0) {
1011 dev_err(port->dev, "%s: fman port initialization failed\n",
1012 __func__);
1013 return -ENODEV;
1014 }
1015
1016 /* The code bellow is a trick so the FM will not release the buffer
1017 * to BM nor will try to enqueue the frame to QM
1018 */
1019 if (port->port_type == FMAN_PORT_TYPE_TX) {
1020 if (!cfg->dflt_fqid && cfg->dont_release_buf) {
1021 /* override fmbm_tcfqid 0 with a false non-0 value.
1022 * This will force FM to act according to tfene.
1023 * Otherwise, if fmbm_tcfqid is 0 the FM will release
1024 * buffers to BM regardless of fmbm_tfene
1025 */
1026 iowrite32be(0xFFFFFF, &port->bmi_regs->tx.fmbm_tcfqid);
1027 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX_RELEASE,
1028 &port->bmi_regs->tx.fmbm_tfene);
1029 }
1030 }
1031
1032 return 0;
1033 }
1034
fill_soc_specific_params(struct fman_port * port)1035 static int fill_soc_specific_params(struct fman_port *port)
1036 {
1037 u32 bmi_max_fifo_size;
1038
1039 bmi_max_fifo_size = fman_get_bmi_max_fifo_size(port->fm);
1040 port->max_port_fifo_size = MAX_PORT_FIFO_SIZE(bmi_max_fifo_size);
1041 port->bm_max_num_of_pools = 64;
1042
1043 /* P4080 - Major 2
1044 * P2041/P3041/P5020/P5040 - Major 3
1045 * Tx/Bx - Major 6
1046 */
1047 switch (port->rev_info.major) {
1048 case 2:
1049 case 3:
1050 port->max_num_of_ext_pools = 4;
1051 port->max_num_of_sub_portals = 12;
1052 break;
1053
1054 case 6:
1055 port->max_num_of_ext_pools = 8;
1056 port->max_num_of_sub_portals = 16;
1057 break;
1058
1059 default:
1060 dev_err(port->dev, "%s: Unsupported FMan version\n", __func__);
1061 return -EINVAL;
1062 }
1063
1064 return 0;
1065 }
1066
get_dflt_fifo_deq_pipeline_depth(u8 major,enum fman_port_type type,u16 speed)1067 static int get_dflt_fifo_deq_pipeline_depth(u8 major, enum fman_port_type type,
1068 u16 speed)
1069 {
1070 switch (type) {
1071 case FMAN_PORT_TYPE_RX:
1072 case FMAN_PORT_TYPE_TX:
1073 switch (speed) {
1074 case 10000:
1075 return 4;
1076 case 1000:
1077 if (major >= 6)
1078 return 2;
1079 else
1080 return 1;
1081 default:
1082 return 0;
1083 }
1084 default:
1085 return 0;
1086 }
1087 }
1088
get_dflt_num_of_tasks(u8 major,enum fman_port_type type,u16 speed)1089 static int get_dflt_num_of_tasks(u8 major, enum fman_port_type type,
1090 u16 speed)
1091 {
1092 switch (type) {
1093 case FMAN_PORT_TYPE_RX:
1094 case FMAN_PORT_TYPE_TX:
1095 switch (speed) {
1096 case 10000:
1097 return 16;
1098 case 1000:
1099 if (major >= 6)
1100 return 4;
1101 else
1102 return 3;
1103 default:
1104 return 0;
1105 }
1106 default:
1107 return 0;
1108 }
1109 }
1110
get_dflt_extra_num_of_tasks(u8 major,enum fman_port_type type,u16 speed)1111 static int get_dflt_extra_num_of_tasks(u8 major, enum fman_port_type type,
1112 u16 speed)
1113 {
1114 switch (type) {
1115 case FMAN_PORT_TYPE_RX:
1116 /* FMan V3 */
1117 if (major >= 6)
1118 return 0;
1119
1120 /* FMan V2 */
1121 if (speed == 10000)
1122 return 8;
1123 else
1124 return 2;
1125 case FMAN_PORT_TYPE_TX:
1126 default:
1127 return 0;
1128 }
1129 }
1130
get_dflt_num_of_open_dmas(u8 major,enum fman_port_type type,u16 speed)1131 static int get_dflt_num_of_open_dmas(u8 major, enum fman_port_type type,
1132 u16 speed)
1133 {
1134 int val;
1135
1136 if (major >= 6) {
1137 switch (type) {
1138 case FMAN_PORT_TYPE_TX:
1139 if (speed == 10000)
1140 val = 12;
1141 else
1142 val = 3;
1143 break;
1144 case FMAN_PORT_TYPE_RX:
1145 if (speed == 10000)
1146 val = 8;
1147 else
1148 val = 2;
1149 break;
1150 default:
1151 return 0;
1152 }
1153 } else {
1154 switch (type) {
1155 case FMAN_PORT_TYPE_TX:
1156 case FMAN_PORT_TYPE_RX:
1157 if (speed == 10000)
1158 val = 8;
1159 else
1160 val = 1;
1161 break;
1162 default:
1163 val = 0;
1164 }
1165 }
1166
1167 return val;
1168 }
1169
get_dflt_extra_num_of_open_dmas(u8 major,enum fman_port_type type,u16 speed)1170 static int get_dflt_extra_num_of_open_dmas(u8 major, enum fman_port_type type,
1171 u16 speed)
1172 {
1173 /* FMan V3 */
1174 if (major >= 6)
1175 return 0;
1176
1177 /* FMan V2 */
1178 switch (type) {
1179 case FMAN_PORT_TYPE_RX:
1180 case FMAN_PORT_TYPE_TX:
1181 if (speed == 10000)
1182 return 8;
1183 else
1184 return 1;
1185 default:
1186 return 0;
1187 }
1188 }
1189
get_dflt_num_of_fifo_bufs(u8 major,enum fman_port_type type,u16 speed)1190 static int get_dflt_num_of_fifo_bufs(u8 major, enum fman_port_type type,
1191 u16 speed)
1192 {
1193 int val;
1194
1195 if (major >= 6) {
1196 switch (type) {
1197 case FMAN_PORT_TYPE_TX:
1198 if (speed == 10000)
1199 val = 64;
1200 else
1201 val = 50;
1202 break;
1203 case FMAN_PORT_TYPE_RX:
1204 if (speed == 10000)
1205 val = 96;
1206 else
1207 val = 50;
1208 break;
1209 default:
1210 val = 0;
1211 }
1212 } else {
1213 switch (type) {
1214 case FMAN_PORT_TYPE_TX:
1215 if (speed == 10000)
1216 val = 48;
1217 else
1218 val = 44;
1219 break;
1220 case FMAN_PORT_TYPE_RX:
1221 if (speed == 10000)
1222 val = 48;
1223 else
1224 val = 45;
1225 break;
1226 default:
1227 val = 0;
1228 }
1229 }
1230
1231 return val;
1232 }
1233
set_dflt_cfg(struct fman_port * port,struct fman_port_params * port_params)1234 static void set_dflt_cfg(struct fman_port *port,
1235 struct fman_port_params *port_params)
1236 {
1237 struct fman_port_cfg *cfg = port->cfg;
1238
1239 cfg->dma_swap_data = FMAN_PORT_DMA_NO_SWAP;
1240 cfg->color = FMAN_PORT_COLOR_GREEN;
1241 cfg->rx_cut_end_bytes = DFLT_PORT_CUT_BYTES_FROM_END;
1242 cfg->rx_pri_elevation = BMI_PRIORITY_ELEVATION_LEVEL;
1243 cfg->rx_fifo_thr = BMI_FIFO_THRESHOLD;
1244 cfg->tx_fifo_low_comf_level = (5 * 1024);
1245 cfg->deq_type = FMAN_PORT_DEQ_BY_PRI;
1246 cfg->deq_prefetch_option = FMAN_PORT_DEQ_FULL_PREFETCH;
1247 cfg->tx_fifo_deq_pipeline_depth =
1248 BMI_DEQUEUE_PIPELINE_DEPTH(port->port_type, port->port_speed);
1249 cfg->deq_byte_cnt = QMI_BYTE_COUNT_LEVEL_CONTROL(port->port_type);
1250
1251 cfg->rx_pri_elevation =
1252 DFLT_PORT_RX_FIFO_PRI_ELEVATION_LEV(port->max_port_fifo_size);
1253 port->cfg->rx_fifo_thr =
1254 DFLT_PORT_RX_FIFO_THRESHOLD(port->rev_info.major,
1255 port->max_port_fifo_size);
1256
1257 if ((port->rev_info.major == 6) &&
1258 ((port->rev_info.minor == 0) || (port->rev_info.minor == 3)))
1259 cfg->errata_A006320 = true;
1260
1261 /* Excessive Threshold register - exists for pre-FMv3 chips only */
1262 if (port->rev_info.major < 6)
1263 cfg->excessive_threshold_register = true;
1264 else
1265 cfg->fmbm_tfne_has_features = true;
1266
1267 cfg->buffer_prefix_content.data_align =
1268 DFLT_PORT_BUFFER_PREFIX_CONTEXT_DATA_ALIGN;
1269 }
1270
set_rx_dflt_cfg(struct fman_port * port,struct fman_port_params * port_params)1271 static void set_rx_dflt_cfg(struct fman_port *port,
1272 struct fman_port_params *port_params)
1273 {
1274 port->cfg->discard_mask = DFLT_PORT_ERRORS_TO_DISCARD;
1275
1276 memcpy(&port->cfg->ext_buf_pools,
1277 &port_params->specific_params.rx_params.ext_buf_pools,
1278 sizeof(struct fman_ext_pools));
1279 port->cfg->err_fqid =
1280 port_params->specific_params.rx_params.err_fqid;
1281 port->cfg->dflt_fqid =
1282 port_params->specific_params.rx_params.dflt_fqid;
1283 port->cfg->pcd_base_fqid =
1284 port_params->specific_params.rx_params.pcd_base_fqid;
1285 port->cfg->pcd_fqs_count =
1286 port_params->specific_params.rx_params.pcd_fqs_count;
1287 }
1288
set_tx_dflt_cfg(struct fman_port * port,struct fman_port_params * port_params,struct fman_port_dts_params * dts_params)1289 static void set_tx_dflt_cfg(struct fman_port *port,
1290 struct fman_port_params *port_params,
1291 struct fman_port_dts_params *dts_params)
1292 {
1293 port->cfg->tx_fifo_deq_pipeline_depth =
1294 get_dflt_fifo_deq_pipeline_depth(port->rev_info.major,
1295 port->port_type,
1296 port->port_speed);
1297 port->cfg->err_fqid =
1298 port_params->specific_params.non_rx_params.err_fqid;
1299 port->cfg->deq_sp =
1300 (u8)(dts_params->qman_channel_id & QMI_DEQ_CFG_SUBPORTAL_MASK);
1301 port->cfg->dflt_fqid =
1302 port_params->specific_params.non_rx_params.dflt_fqid;
1303 port->cfg->deq_high_priority = true;
1304 }
1305
1306 /**
1307 * fman_port_config
1308 * @port: Pointer to the port structure
1309 * @params: Pointer to data structure of parameters
1310 *
1311 * Creates a descriptor for the FM PORT module.
1312 * The routine returns a pointer to the FM PORT object.
1313 * This descriptor must be passed as first parameter to all other FM PORT
1314 * function calls.
1315 * No actual initialization or configuration of FM hardware is done by this
1316 * routine.
1317 *
1318 * Return: 0 on success; Error code otherwise.
1319 */
fman_port_config(struct fman_port * port,struct fman_port_params * params)1320 int fman_port_config(struct fman_port *port, struct fman_port_params *params)
1321 {
1322 void __iomem *base_addr = port->dts_params.base_addr;
1323 int err;
1324
1325 /* Allocate the FM driver's parameters structure */
1326 port->cfg = kzalloc(sizeof(*port->cfg), GFP_KERNEL);
1327 if (!port->cfg)
1328 return -EINVAL;
1329
1330 /* Initialize FM port parameters which will be kept by the driver */
1331 port->port_type = port->dts_params.type;
1332 port->port_speed = port->dts_params.speed;
1333 port->port_id = port->dts_params.id;
1334 port->fm = port->dts_params.fman;
1335 port->ext_pools_num = (u8)8;
1336
1337 /* get FM revision */
1338 fman_get_revision(port->fm, &port->rev_info);
1339
1340 err = fill_soc_specific_params(port);
1341 if (err)
1342 goto err_port_cfg;
1343
1344 switch (port->port_type) {
1345 case FMAN_PORT_TYPE_RX:
1346 set_rx_dflt_cfg(port, params);
1347 fallthrough;
1348 case FMAN_PORT_TYPE_TX:
1349 set_tx_dflt_cfg(port, params, &port->dts_params);
1350 fallthrough;
1351 default:
1352 set_dflt_cfg(port, params);
1353 }
1354
1355 /* Continue with other parameters */
1356 /* set memory map pointers */
1357 port->bmi_regs = base_addr + BMI_PORT_REGS_OFFSET;
1358 port->qmi_regs = base_addr + QMI_PORT_REGS_OFFSET;
1359 port->hwp_regs = base_addr + HWP_PORT_REGS_OFFSET;
1360
1361 port->max_frame_length = DFLT_PORT_MAX_FRAME_LENGTH;
1362 /* resource distribution. */
1363
1364 port->fifo_bufs.num =
1365 get_dflt_num_of_fifo_bufs(port->rev_info.major, port->port_type,
1366 port->port_speed) * FMAN_BMI_FIFO_UNITS;
1367 port->fifo_bufs.extra =
1368 DFLT_PORT_EXTRA_NUM_OF_FIFO_BUFS * FMAN_BMI_FIFO_UNITS;
1369
1370 port->open_dmas.num =
1371 get_dflt_num_of_open_dmas(port->rev_info.major,
1372 port->port_type, port->port_speed);
1373 port->open_dmas.extra =
1374 get_dflt_extra_num_of_open_dmas(port->rev_info.major,
1375 port->port_type, port->port_speed);
1376 port->tasks.num =
1377 get_dflt_num_of_tasks(port->rev_info.major,
1378 port->port_type, port->port_speed);
1379 port->tasks.extra =
1380 get_dflt_extra_num_of_tasks(port->rev_info.major,
1381 port->port_type, port->port_speed);
1382
1383 /* FM_HEAVY_TRAFFIC_SEQUENCER_HANG_ERRATA_FMAN_A006981 errata
1384 * workaround
1385 */
1386 if ((port->rev_info.major == 6) && (port->rev_info.minor == 0) &&
1387 (((port->port_type == FMAN_PORT_TYPE_TX) &&
1388 (port->port_speed == 1000)))) {
1389 port->open_dmas.num = 16;
1390 port->open_dmas.extra = 0;
1391 }
1392
1393 if (port->rev_info.major >= 6 &&
1394 port->port_type == FMAN_PORT_TYPE_TX &&
1395 port->port_speed == 1000) {
1396 /* FM_WRONG_RESET_VALUES_ERRATA_FMAN_A005127 Errata
1397 * workaround
1398 */
1399 u32 reg;
1400
1401 reg = 0x00001013;
1402 iowrite32be(reg, &port->bmi_regs->tx.fmbm_tfp);
1403 }
1404
1405 return 0;
1406
1407 err_port_cfg:
1408 kfree(port->cfg);
1409 return -EINVAL;
1410 }
1411 EXPORT_SYMBOL(fman_port_config);
1412
1413 /*
1414 * fman_port_use_kg_hash
1415 * @port: A pointer to a FM Port module.
1416 * @enable: enable or disable
1417 *
1418 * Sets the HW KeyGen or the BMI as HW Parser next engine, enabling
1419 * or bypassing the KeyGen hashing of Rx traffic
1420 */
fman_port_use_kg_hash(struct fman_port * port,bool enable)1421 void fman_port_use_kg_hash(struct fman_port *port, bool enable)
1422 {
1423 if (enable)
1424 /* After the Parser frames go to KeyGen */
1425 iowrite32be(NIA_ENG_HWK, &port->bmi_regs->rx.fmbm_rfpne);
1426 else
1427 /* After the Parser frames go to BMI */
1428 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_ENQ_FRAME,
1429 &port->bmi_regs->rx.fmbm_rfpne);
1430 }
1431 EXPORT_SYMBOL(fman_port_use_kg_hash);
1432
1433 /**
1434 * fman_port_init
1435 * @port: A pointer to a FM Port module.
1436 *
1437 * Initializes the FM PORT module by defining the software structure and
1438 * configuring the hardware registers.
1439 *
1440 * Return: 0 on success; Error code otherwise.
1441 */
fman_port_init(struct fman_port * port)1442 int fman_port_init(struct fman_port *port)
1443 {
1444 struct fman_port_init_params params;
1445 struct fman_keygen *keygen;
1446 struct fman_port_cfg *cfg;
1447 int err;
1448
1449 if (is_init_done(port->cfg))
1450 return -EINVAL;
1451
1452 err = fman_sp_build_buffer_struct(&port->cfg->int_context,
1453 &port->cfg->buffer_prefix_content,
1454 &port->cfg->buf_margins,
1455 &port->buffer_offsets,
1456 &port->internal_buf_offset);
1457 if (err)
1458 return err;
1459
1460 cfg = port->cfg;
1461
1462 if (port->port_type == FMAN_PORT_TYPE_RX) {
1463 /* Call the external Buffer routine which also checks fifo
1464 * size and updates it if necessary
1465 */
1466 /* define external buffer pools and pool depletion */
1467 err = set_ext_buffer_pools(port);
1468 if (err)
1469 return err;
1470 /* check if the largest external buffer pool is large enough */
1471 if (cfg->buf_margins.start_margins + MIN_EXT_BUF_SIZE +
1472 cfg->buf_margins.end_margins >
1473 port->rx_pools_params.largest_buf_size) {
1474 dev_err(port->dev, "%s: buf_margins.start_margins (%d) + minimum buf size (64) + buf_margins.end_margins (%d) is larger than maximum external buffer size (%d)\n",
1475 __func__, cfg->buf_margins.start_margins,
1476 cfg->buf_margins.end_margins,
1477 port->rx_pools_params.largest_buf_size);
1478 return -EINVAL;
1479 }
1480 }
1481
1482 /* Call FM module routine for communicating parameters */
1483 memset(¶ms, 0, sizeof(params));
1484 params.port_id = port->port_id;
1485 params.port_type = port->port_type;
1486 params.port_speed = port->port_speed;
1487 params.num_of_tasks = (u8)port->tasks.num;
1488 params.num_of_extra_tasks = (u8)port->tasks.extra;
1489 params.num_of_open_dmas = (u8)port->open_dmas.num;
1490 params.num_of_extra_open_dmas = (u8)port->open_dmas.extra;
1491
1492 if (port->fifo_bufs.num) {
1493 err = verify_size_of_fifo(port);
1494 if (err)
1495 return err;
1496 }
1497 params.size_of_fifo = port->fifo_bufs.num;
1498 params.extra_size_of_fifo = port->fifo_bufs.extra;
1499 params.deq_pipeline_depth = port->cfg->tx_fifo_deq_pipeline_depth;
1500 params.max_frame_length = port->max_frame_length;
1501
1502 err = fman_set_port_params(port->fm, ¶ms);
1503 if (err)
1504 return err;
1505
1506 err = init_low_level_driver(port);
1507 if (err)
1508 return err;
1509
1510 if (port->cfg->pcd_fqs_count) {
1511 keygen = port->dts_params.fman->keygen;
1512 err = keygen_port_hashing_init(keygen, port->port_id,
1513 port->cfg->pcd_base_fqid,
1514 port->cfg->pcd_fqs_count);
1515 if (err)
1516 return err;
1517
1518 fman_port_use_kg_hash(port, true);
1519 }
1520
1521 kfree(port->cfg);
1522 port->cfg = NULL;
1523
1524 return 0;
1525 }
1526 EXPORT_SYMBOL(fman_port_init);
1527
1528 /**
1529 * fman_port_cfg_buf_prefix_content
1530 * @port: A pointer to a FM Port module.
1531 * @buffer_prefix_content: A structure of parameters describing
1532 * the structure of the buffer.
1533 * Out parameter:
1534 * Start margin - offset of data from
1535 * start of external buffer.
1536 * Defines the structure, size and content of the application buffer.
1537 * The prefix, in Tx ports, if 'pass_prs_result', the application should set
1538 * a value to their offsets in the prefix of the FM will save the first
1539 * 'priv_data_size', than, depending on 'pass_prs_result' and
1540 * 'pass_time_stamp', copy parse result and timeStamp, and the packet itself
1541 * (in this order), to the application buffer, and to offset.
1542 * Calling this routine changes the buffer margins definitions in the internal
1543 * driver data base from its default configuration:
1544 * Data size: [DEFAULT_PORT_BUFFER_PREFIX_CONTENT_PRIV_DATA_SIZE]
1545 * Pass Parser result: [DEFAULT_PORT_BUFFER_PREFIX_CONTENT_PASS_PRS_RESULT].
1546 * Pass timestamp: [DEFAULT_PORT_BUFFER_PREFIX_CONTENT_PASS_TIME_STAMP].
1547 * May be used for all ports
1548 *
1549 * Allowed only following fman_port_config() and before fman_port_init().
1550 *
1551 * Return: 0 on success; Error code otherwise.
1552 */
fman_port_cfg_buf_prefix_content(struct fman_port * port,struct fman_buffer_prefix_content * buffer_prefix_content)1553 int fman_port_cfg_buf_prefix_content(struct fman_port *port,
1554 struct fman_buffer_prefix_content *
1555 buffer_prefix_content)
1556 {
1557 if (is_init_done(port->cfg))
1558 return -EINVAL;
1559
1560 memcpy(&port->cfg->buffer_prefix_content,
1561 buffer_prefix_content,
1562 sizeof(struct fman_buffer_prefix_content));
1563 /* if data_align was not initialized by user,
1564 * we return to driver's default
1565 */
1566 if (!port->cfg->buffer_prefix_content.data_align)
1567 port->cfg->buffer_prefix_content.data_align =
1568 DFLT_PORT_BUFFER_PREFIX_CONTEXT_DATA_ALIGN;
1569
1570 return 0;
1571 }
1572 EXPORT_SYMBOL(fman_port_cfg_buf_prefix_content);
1573
1574 /**
1575 * fman_port_disable
1576 * @port: A pointer to a FM Port module.
1577 *
1578 * Gracefully disable an FM port. The port will not start new tasks after all
1579 * tasks associated with the port are terminated.
1580 *
1581 * This is a blocking routine, it returns after port is gracefully stopped,
1582 * i.e. the port will not except new frames, but it will finish all frames
1583 * or tasks which were already began.
1584 * Allowed only following fman_port_init().
1585 *
1586 * Return: 0 on success; Error code otherwise.
1587 */
fman_port_disable(struct fman_port * port)1588 int fman_port_disable(struct fman_port *port)
1589 {
1590 u32 __iomem *bmi_cfg_reg, *bmi_status_reg;
1591 u32 tmp;
1592 bool rx_port, failure = false;
1593 int count;
1594
1595 if (!is_init_done(port->cfg))
1596 return -EINVAL;
1597
1598 switch (port->port_type) {
1599 case FMAN_PORT_TYPE_RX:
1600 bmi_cfg_reg = &port->bmi_regs->rx.fmbm_rcfg;
1601 bmi_status_reg = &port->bmi_regs->rx.fmbm_rst;
1602 rx_port = true;
1603 break;
1604 case FMAN_PORT_TYPE_TX:
1605 bmi_cfg_reg = &port->bmi_regs->tx.fmbm_tcfg;
1606 bmi_status_reg = &port->bmi_regs->tx.fmbm_tst;
1607 rx_port = false;
1608 break;
1609 default:
1610 return -EINVAL;
1611 }
1612
1613 /* Disable QMI */
1614 if (!rx_port) {
1615 tmp = ioread32be(&port->qmi_regs->fmqm_pnc) & ~QMI_PORT_CFG_EN;
1616 iowrite32be(tmp, &port->qmi_regs->fmqm_pnc);
1617
1618 /* Wait for QMI to finish FD handling */
1619 count = 100;
1620 do {
1621 udelay(10);
1622 tmp = ioread32be(&port->qmi_regs->fmqm_pns);
1623 } while ((tmp & QMI_PORT_STATUS_DEQ_FD_BSY) && --count);
1624
1625 if (count == 0) {
1626 /* Timeout */
1627 failure = true;
1628 }
1629 }
1630
1631 /* Disable BMI */
1632 tmp = ioread32be(bmi_cfg_reg) & ~BMI_PORT_CFG_EN;
1633 iowrite32be(tmp, bmi_cfg_reg);
1634
1635 /* Wait for graceful stop end */
1636 count = 500;
1637 do {
1638 udelay(10);
1639 tmp = ioread32be(bmi_status_reg);
1640 } while ((tmp & BMI_PORT_STATUS_BSY) && --count);
1641
1642 if (count == 0) {
1643 /* Timeout */
1644 failure = true;
1645 }
1646
1647 if (failure)
1648 dev_dbg(port->dev, "%s: FMan Port[%d]: BMI or QMI is Busy. Port forced down\n",
1649 __func__, port->port_id);
1650
1651 return 0;
1652 }
1653 EXPORT_SYMBOL(fman_port_disable);
1654
1655 /**
1656 * fman_port_enable
1657 * @port: A pointer to a FM Port module.
1658 *
1659 * A runtime routine provided to allow disable/enable of port.
1660 *
1661 * Allowed only following fman_port_init().
1662 *
1663 * Return: 0 on success; Error code otherwise.
1664 */
fman_port_enable(struct fman_port * port)1665 int fman_port_enable(struct fman_port *port)
1666 {
1667 u32 __iomem *bmi_cfg_reg;
1668 u32 tmp;
1669 bool rx_port;
1670
1671 if (!is_init_done(port->cfg))
1672 return -EINVAL;
1673
1674 switch (port->port_type) {
1675 case FMAN_PORT_TYPE_RX:
1676 bmi_cfg_reg = &port->bmi_regs->rx.fmbm_rcfg;
1677 rx_port = true;
1678 break;
1679 case FMAN_PORT_TYPE_TX:
1680 bmi_cfg_reg = &port->bmi_regs->tx.fmbm_tcfg;
1681 rx_port = false;
1682 break;
1683 default:
1684 return -EINVAL;
1685 }
1686
1687 /* Enable QMI */
1688 if (!rx_port) {
1689 tmp = ioread32be(&port->qmi_regs->fmqm_pnc) | QMI_PORT_CFG_EN;
1690 iowrite32be(tmp, &port->qmi_regs->fmqm_pnc);
1691 }
1692
1693 /* Enable BMI */
1694 tmp = ioread32be(bmi_cfg_reg) | BMI_PORT_CFG_EN;
1695 iowrite32be(tmp, bmi_cfg_reg);
1696
1697 return 0;
1698 }
1699 EXPORT_SYMBOL(fman_port_enable);
1700
1701 /**
1702 * fman_port_bind
1703 * @dev: FMan Port OF device pointer
1704 *
1705 * Bind to a specific FMan Port.
1706 *
1707 * Allowed only after the port was created.
1708 *
1709 * Return: A pointer to the FMan port device.
1710 */
fman_port_bind(struct device * dev)1711 struct fman_port *fman_port_bind(struct device *dev)
1712 {
1713 return (struct fman_port *)(dev_get_drvdata(get_device(dev)));
1714 }
1715 EXPORT_SYMBOL(fman_port_bind);
1716
1717 /**
1718 * fman_port_get_qman_channel_id
1719 * @port: Pointer to the FMan port devuce
1720 *
1721 * Get the QMan channel ID for the specific port
1722 *
1723 * Return: QMan channel ID
1724 */
fman_port_get_qman_channel_id(struct fman_port * port)1725 u32 fman_port_get_qman_channel_id(struct fman_port *port)
1726 {
1727 return port->dts_params.qman_channel_id;
1728 }
1729 EXPORT_SYMBOL(fman_port_get_qman_channel_id);
1730
1731 /**
1732 * fman_port_get_device
1733 * @port: Pointer to the FMan port device
1734 *
1735 * Get the 'struct device' associated to the specified FMan port device
1736 *
1737 * Return: pointer to associated 'struct device'
1738 */
fman_port_get_device(struct fman_port * port)1739 struct device *fman_port_get_device(struct fman_port *port)
1740 {
1741 return port->dev;
1742 }
1743 EXPORT_SYMBOL(fman_port_get_device);
1744
fman_port_get_hash_result_offset(struct fman_port * port,u32 * offset)1745 int fman_port_get_hash_result_offset(struct fman_port *port, u32 *offset)
1746 {
1747 if (port->buffer_offsets.hash_result_offset == ILLEGAL_BASE)
1748 return -EINVAL;
1749
1750 *offset = port->buffer_offsets.hash_result_offset;
1751
1752 return 0;
1753 }
1754 EXPORT_SYMBOL(fman_port_get_hash_result_offset);
1755
fman_port_get_tstamp(struct fman_port * port,const void * data,u64 * tstamp)1756 int fman_port_get_tstamp(struct fman_port *port, const void *data, u64 *tstamp)
1757 {
1758 if (port->buffer_offsets.time_stamp_offset == ILLEGAL_BASE)
1759 return -EINVAL;
1760
1761 *tstamp = be64_to_cpu(*(__be64 *)(data +
1762 port->buffer_offsets.time_stamp_offset));
1763
1764 return 0;
1765 }
1766 EXPORT_SYMBOL(fman_port_get_tstamp);
1767
fman_port_probe(struct platform_device * of_dev)1768 static int fman_port_probe(struct platform_device *of_dev)
1769 {
1770 struct fman_port *port;
1771 struct fman *fman;
1772 struct device_node *fm_node, *port_node;
1773 struct platform_device *fm_pdev;
1774 struct resource res;
1775 struct resource *dev_res;
1776 u32 val;
1777 int err = 0, lenp;
1778 enum fman_port_type port_type;
1779 u16 port_speed;
1780 u8 port_id;
1781
1782 port = kzalloc(sizeof(*port), GFP_KERNEL);
1783 if (!port)
1784 return -ENOMEM;
1785
1786 port->dev = &of_dev->dev;
1787
1788 port_node = of_node_get(of_dev->dev.of_node);
1789
1790 /* Get the FM node */
1791 fm_node = of_get_parent(port_node);
1792 if (!fm_node) {
1793 dev_err(port->dev, "%s: of_get_parent() failed\n", __func__);
1794 err = -ENODEV;
1795 goto return_err;
1796 }
1797
1798 fm_pdev = of_find_device_by_node(fm_node);
1799 of_node_put(fm_node);
1800 if (!fm_pdev) {
1801 err = -EINVAL;
1802 goto return_err;
1803 }
1804
1805 fman = dev_get_drvdata(&fm_pdev->dev);
1806 if (!fman) {
1807 err = -EINVAL;
1808 goto return_err;
1809 }
1810
1811 err = of_property_read_u32(port_node, "cell-index", &val);
1812 if (err) {
1813 dev_err(port->dev, "%s: reading cell-index for %pOF failed\n",
1814 __func__, port_node);
1815 err = -EINVAL;
1816 goto return_err;
1817 }
1818 port_id = (u8)val;
1819 port->dts_params.id = port_id;
1820
1821 if (of_device_is_compatible(port_node, "fsl,fman-v3-port-tx")) {
1822 port_type = FMAN_PORT_TYPE_TX;
1823 port_speed = 1000;
1824 if (of_find_property(port_node, "fsl,fman-10g-port", &lenp))
1825 port_speed = 10000;
1826
1827 } else if (of_device_is_compatible(port_node, "fsl,fman-v2-port-tx")) {
1828 if (port_id >= TX_10G_PORT_BASE)
1829 port_speed = 10000;
1830 else
1831 port_speed = 1000;
1832 port_type = FMAN_PORT_TYPE_TX;
1833
1834 } else if (of_device_is_compatible(port_node, "fsl,fman-v3-port-rx")) {
1835 port_type = FMAN_PORT_TYPE_RX;
1836 port_speed = 1000;
1837 if (of_find_property(port_node, "fsl,fman-10g-port", &lenp))
1838 port_speed = 10000;
1839
1840 } else if (of_device_is_compatible(port_node, "fsl,fman-v2-port-rx")) {
1841 if (port_id >= RX_10G_PORT_BASE)
1842 port_speed = 10000;
1843 else
1844 port_speed = 1000;
1845 port_type = FMAN_PORT_TYPE_RX;
1846
1847 } else {
1848 dev_err(port->dev, "%s: Illegal port type\n", __func__);
1849 err = -EINVAL;
1850 goto return_err;
1851 }
1852
1853 port->dts_params.type = port_type;
1854 port->dts_params.speed = port_speed;
1855
1856 if (port_type == FMAN_PORT_TYPE_TX) {
1857 u32 qman_channel_id;
1858
1859 qman_channel_id = fman_get_qman_channel_id(fman, port_id);
1860 if (qman_channel_id == 0) {
1861 dev_err(port->dev, "%s: incorrect qman-channel-id\n",
1862 __func__);
1863 err = -EINVAL;
1864 goto return_err;
1865 }
1866 port->dts_params.qman_channel_id = qman_channel_id;
1867 }
1868
1869 err = of_address_to_resource(port_node, 0, &res);
1870 if (err < 0) {
1871 dev_err(port->dev, "%s: of_address_to_resource() failed\n",
1872 __func__);
1873 err = -ENOMEM;
1874 goto return_err;
1875 }
1876
1877 port->dts_params.fman = fman;
1878
1879 of_node_put(port_node);
1880
1881 dev_res = __devm_request_region(port->dev, &res, res.start,
1882 resource_size(&res), "fman-port");
1883 if (!dev_res) {
1884 dev_err(port->dev, "%s: __devm_request_region() failed\n",
1885 __func__);
1886 err = -EINVAL;
1887 goto free_port;
1888 }
1889
1890 port->dts_params.base_addr = devm_ioremap(port->dev, res.start,
1891 resource_size(&res));
1892 if (!port->dts_params.base_addr)
1893 dev_err(port->dev, "%s: devm_ioremap() failed\n", __func__);
1894
1895 dev_set_drvdata(&of_dev->dev, port);
1896
1897 return 0;
1898
1899 return_err:
1900 of_node_put(port_node);
1901 free_port:
1902 kfree(port);
1903 return err;
1904 }
1905
1906 static const struct of_device_id fman_port_match[] = {
1907 {.compatible = "fsl,fman-v3-port-rx"},
1908 {.compatible = "fsl,fman-v2-port-rx"},
1909 {.compatible = "fsl,fman-v3-port-tx"},
1910 {.compatible = "fsl,fman-v2-port-tx"},
1911 {}
1912 };
1913
1914 MODULE_DEVICE_TABLE(of, fman_port_match);
1915
1916 static struct platform_driver fman_port_driver = {
1917 .driver = {
1918 .name = "fsl-fman-port",
1919 .of_match_table = fman_port_match,
1920 },
1921 .probe = fman_port_probe,
1922 };
1923
fman_port_load(void)1924 static int __init fman_port_load(void)
1925 {
1926 int err;
1927
1928 pr_debug("FSL DPAA FMan driver\n");
1929
1930 err = platform_driver_register(&fman_port_driver);
1931 if (err < 0)
1932 pr_err("Error, platform_driver_register() = %d\n", err);
1933
1934 return err;
1935 }
1936 module_init(fman_port_load);
1937
fman_port_unload(void)1938 static void __exit fman_port_unload(void)
1939 {
1940 platform_driver_unregister(&fman_port_driver);
1941 }
1942 module_exit(fman_port_unload);
1943
1944 MODULE_LICENSE("Dual BSD/GPL");
1945 MODULE_DESCRIPTION("Freescale DPAA Frame Manager Port driver");
1946